What is the purpose of the BILKA fixing clamp for standing seam metal roofing?
The BILKA fixing clamp secures the standing seam covering to the base in a specific fixed zone and remains hidden in the seam. The official page describes it as a clamp for mounting the folded metal sheet. It works together with the sliding clamps and is not a visible screw through the face of the sheet. The location of the fixed zone depends on the length, slope, and mounting system and should not be chosen arbitrarily in the middle of the roof.
What does the 25 mm size mean for the BILKA fixing clamp?
The Shopify listing includes a "25 mm" variant, but the official overview page does not specify which geometric part this size refers to. Therefore, it is incorrect to interpret it as the height of the seam, the width of the base, or the length of the fastener without a drawing. Before ordering, the 25 mm should be checked against the profile of the standing seam metal and the factory specification. The number alone does not guarantee compatibility with every double seam.
What SKU does the BILKA 25 mm fixing clamp have?
The only Shopify variant has SKU LT-5586 and barcode LATDGIMT4. There is no choice of material, thickness, quantity per pack, or fastener type. These details must be confirmed from the packaging or technical sheet before calculating quantity or matching with a specific base. The code differs from the sliding clamp LT-5585, which is important when ordering a set for the same standing seam system.
What is the difference between the BILKA fixing and sliding clamps?
The fixing clamp holds the sheet firmly in the designated fixed zone, while the sliding clamp allows longitudinal thermal movement of the covering. The two types have different roles and not all clamps should be replaced with only one type. The exact distribution is determined by the installation project or instructions for the specific standing seam sheet. An incorrect combination can restrict expansion or leave the covering without the necessary fixed support point.
How many BILKA fixing clamps are needed per square meter?
A universal number per square meter cannot be set based solely on the Shopify product. The quantity depends on the width of the standing seam panels, clamp spacing, height and zone of the roof, wind load, base, and the fixed zone design. The official page used does not publish a general norm for SKU LT-5586. The exact scheme must come from engineering calculations or current installation documentation for the chosen profile.
What fasteners are used with the BILKA fixing clamp?
The fastener must match the clamp holes, base material, and system specification, but Shopify does not list included screws or sizes. A random roofing screw should not be chosen just based on availability. For wood, OSB, or other solid bases, there may be different requirements for length and corrosion compatibility. Before installation, the factory drawing, spacing, and whether the fastener head allows proper seam closure must be checked.
